Effect of Combined Surface Treatments on Surface Roughness and Resin Bond Strength to Y-TZP Ceramic and Nickel-Chromium Metal Alloy.

This study compared the effects of different surface treatments on the surface roughness (), and shear bond strength (SBS) of resin cement to yttria-stabilized tetragonal zirconia (Y-TZP) ceramic and nickel-chromium (Ni-Cr) base metal alloy, respectively. Thirty disk-shaped specimens (3 mm height and 10 mm diameter) of each material (Y-TZP and Ni-Cr) were prepared. Both zirconia and metal specimens were randomly assigned to three equal groups, according to the surface treatments ( = 10): sandblasting, sandblasting + Er:YAG laser, and sandblasting + Nd:YAG laser.

Management of restricted mouth opening caused by radiation: A clinical report.

Trismus, a commonly observed sequela in patients who have undergone radiation therapy to treat malignancies of the head and neck, causes a loss of function that reduces patients' overall quality of life. Radiation can cause intense fibrosis in the masticatory muscles, and this fibrosis may lead to trismus. This clinical report describes the management of a patient with radiation-induced trismus who was treated with a custom-made mouth-opening device.

Color Stability of CAD/CAM Fabricated Inlays after Accelerated Artificial Aging.

Purpose: To investigate the influence of accelerated artificial aging on the color stability of three different inlay restorations produced with a CAD/CAM system.

Materials And Methods: Thirty non-carious human mandibular molar teeth were used. The teeth were embedded in autopolymerizing acrylic resin blocks.